.letter-group{
  padding: 0 10px;
  border-bottom:1px solid #f1f1f1 ;
  .city-letter{
    font: 14px '雅黑';
    color: #666;
    padding: 10px 0 0 0;
  }
  .city{
    font: 16px '雅黑';
    padding: 10px 0;
  }
}

.city-index{
  position: absolute;
  top: 0;
  right: 5px;
  width: 30px;
  height: 100%;
  background-color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  .item{
    width: 25px;
    height: 25px;
    font-size: 12px;
    margin: 1px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: .2s;
    &.active{
      background-color: #21b68a;
      border-radius: 40% 40% 40% 40%;
      overflow: hidden;
      transition: 0s;
      color: #fff;
      font-size: 16px;
      box-shadow: 2px 2px 6px #21b68a,-2px -2px 10px #21b68a;
      transition: .2s;
    }
  }
}